What type of DNA makes up most of the genome and does not code for proteins or RNA?

Study for the DNA Replication and DNA Storage Test. Use flashcards and multiple choice questions, each with hints and explanations. Prepare for your exam with confidence!

Multiple Choice

What type of DNA makes up most of the genome and does not code for proteins or RNA?

Explanation:
Most of the genome is noncoding DNA, and it’s largely made up of repetitive elements. This repetitive DNA includes things like transposable elements that have copied themselves throughout the genome and satellite DNA found in centromeric regions. These sequences aren’t arranged into genes that produce proteins, and they don’t serve as the usual protein-coding RNA genes. In contrast, the coding portion of DNA carries the recipes for proteins, regulatory DNA governs when and where genes are turned on, and mitochondrial DNA is a small, separate genome. So the type that makes up most of the genome and does not code for proteins or RNA is repetitive DNA.

Most of the genome is noncoding DNA, and it’s largely made up of repetitive elements. This repetitive DNA includes things like transposable elements that have copied themselves throughout the genome and satellite DNA found in centromeric regions. These sequences aren’t arranged into genes that produce proteins, and they don’t serve as the usual protein-coding RNA genes. In contrast, the coding portion of DNA carries the recipes for proteins, regulatory DNA governs when and where genes are turned on, and mitochondrial DNA is a small, separate genome. So the type that makes up most of the genome and does not code for proteins or RNA is repetitive DNA.

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